New Hampshire Cosmetology Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Using a higher volume developer with hair color primarily increases color lift and lightening. Developers come in various volumes, typically ranging from 10 to 40, with higher volumes providing more strength. When a higher volume developer is used, it contains a larger concentration of hydrogen peroxide, which allows it to penetrate the hair cuticle more effectively and facilitate a more significant lifting action on the hair's natural pigment. This lifting capability is particularly important for achieving lighter shades or for lifting dark hair before applying a new color.

For instance, a 20-volume developer is commonly used for depositing color and providing subtle lift, while a 30 or 40-volume developer is utilized for substantial lightening effects, such as when going from dark brown to blonde. It's essential to understand how the developer's volume interacts with both the hair's condition and the desired results, making it crucial in color formulation and application processes for professional hairstylists.